Gateway GT4015 Hardware Reference Manual page 30

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Loosen the four screws that secure the heat sink to the system board, then
5
remove the heat sink.
Screws
Release the processor by pushing down on the lever and then lifting it
6
completely up.
Remove the processor from the system board.
7
Install the new processor onto the system board making sure that Pin 1
8
on the processor (indicated by the silk-screened arrow on the corner of
the processor) aligns with Pin 1 on the processor socket (indicated by the
absence of a pin hole in the processor socket), then return the lever to its
locked position.
Place the heat sink on the system board, then tighten the screws that
9
secure it to the system board.
Connect the fan cable to the system board, then insert the fan into place.
10
Replace the side panel by following the instructions in
11
panel" on page 14.
Replacing the heat sink and processor
Screws
"Replacing the side
27